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What state should the upper bits be in when we deopt? #1570

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ltratt opened this issue Jan 28, 2025 · 0 comments
Open

What state should the upper bits be in when we deopt? #1570

ltratt opened this issue Jan 28, 2025 · 0 comments
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ltratt commented Jan 28, 2025

Imagine we have a 16 (or 7 or 49 or 32 or ...) bit value in a 64-bit register and we deopt: what does LLVM expect the upper bits to contain? Does it not care at all, ever? Or does it sometimes expect zero / sign extension? Or ... ?
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